生成Java类
xjc工具基于此模式来绑定一个模式到Java类。针对本文的示例模式来进行绑定的命令是：
xjc catalog.xsd
xjc命令行接口的一些选项列如下：
-nv 对于输入的模式不执行严格的XML验证
-b ＜file＞ 指定外部的绑定文件
-d ＜dir＞ 指定生成的文件的存放路径
-p ＜pkg＞ 指定目标包
-classpath ＜arg＞ 指定classpath
-use-runtime ＜pkg＞ impl.runtime包不被生成
-xmlschema 输入的模式是一个W3C XML模式（默认）
对于示例模式catalog.xsd来说，xjc将会生成45个类，显示在如下xjc的输出中：
parsing a schema...
compiling a schema...
generated\impl\runtime\ErrorHandlerAdaptor.java
generated\impl\runtime\MSVValidator.java
generated\impl\runtime\NamespaceContext2.java
generated\impl\runtime\UnmarshallableObject.java
generated\impl\runtime\MarshallerImpl.java
generated\impl\runtime\ValidationContext.java
generated\impl\runtime\UnmarshallerImpl.java
generated\impl\runtime\DefaultJAXBContextImpl.java
generated\impl\runtime\ContentHandlerAdaptor.java
generated\impl\runtime\GrammarInfoFacade.java
generated\impl\runtime\UnmarshallingContext.java
generated\impl\runtime\UnmarshallingEventHandlerAdaptor.java
generated\impl\runtime\XMLSerializable.java
generated\impl\runtime\Discarder.java
generated\impl\runtime\PrefixCallback.java
generated\impl\runtime\SAXMarshaller.java
generated\impl\runtime\NamespaceContextImpl.java
generated\impl\runtime\UnmarshallingEventHandler.java
generated\impl\runtime\GrammarInfo.java
generated\impl\runtime\InterningUnmarshallerHandler.java
generated\impl\runtime\ValidatableObject.java
generated\impl\runtime\GrammarInfoImpl.java
generated\impl\runtime\ValidatingUnmarshaller.java
generated\impl\runtime\ValidatorImpl.java
generated\impl\runtime\SAXUnmarshallerHandlerImpl.java
generated\impl\runtime\XMLSerializer.java
generated\impl\runtime\Util.java
generated\impl\runtime\SAXUnmarshallerHandler.java
generated\impl\runtime\AbstractUnmarshallingEventHandlerImpl.java
generated\impl\ArticleImpl.java
generated\impl\ArticleTypeImpl.java
generated\impl\CatalogImpl.java
generated\impl\CatalogTypeImpl.java
generated\impl\JAXBVersion.java
generated\impl\JournalImpl.java
generated\impl\JournalTypeImpl.java
generated\Article.java
generated\ArticleType.java
generated\Catalog.java
generated\CatalogType.java
generated\Journal.java
generated\JournalType.java
generated\ObjectFactory.java
generated\bgm.ser
generated\jaxb.properties
